Reduction of Undesired Range Shifting in an Agricultural Continuously Variable Transmission

Abstract: The subject of this thesis was to investigate the possibility of a supplemental control algorithm to suppress gear alternation in the ZF ECCOM gearbox series. The acquired solutions were implemented on a dSpace MicroAutoBox II and connected to a Claas Xerion 5000 to evaluate their effect. The different approaches have gone through three steps of validation, first a Simulink model simulation, secondly a tractor simulator test, and finally tests on the real tractor.